What was aristarchus’s most important contribution to astronomy?
he argued that earth is far larger than the sun.
a. he argued that earth is far larger than the sun.
b. he theorized that the stars are close to earth and to one another.
c. he believed that earth and the planets revolve around the sun.
d. he asserted that telescopes are necessary for all astronomical work.

answer; ///(1) blank; henry clay; (2) blank; secretary of state; (c)is your answer; ///good luck

1) checks and balances- this idea is implemented in the constitution to ensure that no one branch of the federal government gains too much power. for example, the legislative branch(congress) can approve a bill that will then be sent to the executive branch (president). if the president does not like the bill or thinks that it violates the rights of citizens, he/she can veto the bill. vetoing the bill stops the bill from becoming a law. this check on power ensures that congress makes laws that do not violate the rights of citizens.

2) anti-federalists do not want to ratify the constitution unless it includes a bill of rights. the anti-federalists are worried that the constitution gives too much power to the federal government. having a strong central government caused problems when the us was still part of great britain. this is why the anti-federalists are fearful of this type of system.

3) federalists want a new constitution passed because it will fix america's weak political structure. before the us constitution is implemented, the constitution being used is known as the articles of confederation. this constitution has an extremely weak central government, allowing for disunity among the states.

can't do the whole thing, hope this